Convert templates to use view Types

 

package main

import (
   "github.com/gorilla/mux"
   "html/template"
   "net/http"
)

var (
   homeTemplate    *template.Template
   contactTemplate *template.Template
)

func home(w http.ResponseWriter, r *http.Request) {
   w.Header().Set("Content-Type", "text/html")
   //fmt.Fprint(w, "<h1>Welcome to my awesome site</h1>")
   if err := homeTemplate.Execute(w, nil); err != nil {
      panic(err)
   }
}

func contact(w http.ResponseWriter, r *http.Request) {
   w.Header().Set("Content-Type", "text/html")
   //fmt.Fprint(w, "<h1>Contact page</h1>")
   if err := contactTemplate.Execute(w, nil); err != nil {
      panic(err)
   }
}

func main() {
   var err error
   homeTemplate, err = template.ParseFiles(
      "views/home.gohtml",
      "views/layouts/footer.gohtml",
   )
   if err != nil {
      panic(err)
   }
   contactTemplate, err = template.ParseFiles(
      "views/contact.gohtml",
      "views/layouts/footer.gohtml",
   )
   if err != nil {
      panic(err)
   }
   r := mux.NewRouter()
   r.HandleFunc("/", home)
   r.HandleFunc("/contact", contact)
   http.ListenAndServe(":3000", r)
}

<h1>Welcome to my awesome site...</h1>

{{template "footer"}}

{{define "footer"}}
<footer>
    <p>This is the footer</p>
</footer>
{{end}} 

//View Type

package views

import "html/template"

type View struct {
   Template *template.Template
}

func NewView(files ...string) *View {
   files = append(files, "views/layouts/footer.gohtml")
   t, err := template.ParseFiles(files...)
   if err != nil {
      panic(err)
   }
   return &View{
      Template: t,
   }
}

package main

import (
   "awesomeProject/views"
   "github.com/gorilla/mux"
   "net/http"
)

var (
   homeView    *views.View
   contactView *views.View
)

func home(w http.ResponseWriter, r *http.Request) {
   w.Header().Set("Content-Type", "text/html")
   //fmt.Fprint(w, "<h1>Welcome to my awesome site</h1>")
   if err := homeView.Template.Execute(w, nil); err != nil {
      panic(err)
   }
}

func contact(w http.ResponseWriter, r *http.Request) {
   w.Header().Set("Content-Type", "text/html")
   //fmt.Fprint(w, "<h1>Contact page</h1>")
   if err := contactView.Template.Execute(w, nil); err != nil {
      panic(err)
   }
}

func main() {
   homeView = views.NewView("views/home.gohtml")
   contactView = views.NewView("views/contact.gohtml")

   r := mux.NewRouter()
   r.HandleFunc("/", home)
   r.HandleFunc("/contact", contact)
   http.ListenAndServe(":3000", r)
}